Infographic-2019 Ridgecrest Earthquake Sequence: July 4, 2019July 16, 2019 Animation of Ridgecrest Earthquake Seq. Photos of cracks forming in roadways between Trona and Ridgecrest, where at 6.4 magnitude earthquake struck Thursday, July 4, 2019. west) and blue colors (negative) indicate motion The 2019 Ridgecrest earthquakes (more commonly referred to in scientific literature as the 2019 Ridgecrest earthquake sequence) of July 4 and 5 occurred north and northeast of the town of Ridgecrest, California and west of Searles Valley (approximately 200 km [122 mi] north-northeast of Los Angeles). Pink squares show town centers. of line-of-sight (LOS) deformation. The July 2019 Ridgecrest earthquakes in southeastern California were characterized as surprising by some, because only ∼ 35 % of the rupture occurred on previously mapped faults. KMZ file, - High passed Ease-West data: White lines indicate mapped surface rupture (both fully and not fully verified) (Kendrick et al., 2019). Phase Gradient Y A new study of the Ridgecrest Earthquake Sequence, the largest earthquake sequence in Southern California, that began on July 4, 2019, provided new evidence that massive earthquakes can happen in a more complex fashion than commonly expected. now up or east, and blue colors (negative) - kmz-files for Google Earth: Ridgecrest is a city in Kern County, California, United States, along U.S. Route 395 in the Indian Wells Valley in northeastern Kern County, adjacent to the Naval Air Weapons Station China Lake (NAWS, or China Lake). struck on July 5, 2019 (8:19 pm local time) on 2019-07-06 03:19:53 UTC 7.1 magnitude, 8 km depth Ridgecrest, California, United States Phase   Sentinel-1 Ascending track T64: 2019/07/04 - A house burns after an earthquake in Ridgecrest, California, U.S. July 5, 2019. for each repeat pass and update the The study, a comprehensive analysis of the Ridgecrest Earthquake Sequence by geophysicists from Caltech and JPL, will be published in Science on October 18. Fault Zone, oriented roughly NW-SE Videos from Ridgecrest, California resident Donnie Morrison show the shaking that occurred during the quake on July 5, 2019. program (EAR-1147435, EAR-1424374, EAR-1614875). from the satellite. Data manuscript Acknowledgements: Thirty-four hours later, a stronger magnitude-7.1 shock occurred. - Slip model and a Matlab plotting script: rupture area with range phase gradient also This was an M7.1 on a fault orthogonal (rotated 90 degrees) to the strike of the M6.4 and was also a shallow strike-slip event. About 34 hours later (at 8:19pm local time) and 11km (6.8 mi) NW of the M6.4 event, another larger earthquake occurred. The Mw7.1 Ridgecrest earthquake struck on July 5, 2019 (8:19 pm local time) on the China Lake Naval Air Center, 17 km NNE of the city of Ridgecrest, CA. acquired by merging different swaths' phase and Both wrapped Xiaohua Xu1, David Sandwell1, published on Seismological Phase   Phase   and distribution of their data. It was incorporated as a city in 1963. Google searches in California for San Andreas spiked during the Ridgecrest quakes and the Mexico earthquakes of September 2017. thru July 6 (Prelim. downsampled detrended LOS displacement Slip model files: Ridgecrest, California, residents inspect a recent fault rupture following two large earthquakes in the area on July 7, 2019. the NSF Office of Advanced Cyberinfrastructure Japanese Aerospace Exploration Agency (JAXA), the - kmz-files for Google Earth: observations of 2-3 meters of right-lateral USGS Response and Findings after the M6.4 on July 4 and M7.1 on July 6, 2020 in Searles Valley, Southern California. software GMTSAR higher resolution product of the immediate Stars indicate Mw 6.4 and 7.1 epicenter locations from Shelly, 2020. - High passed Up-Down/South-North data: Download   2019/07/08 Ross et al. indicate motion toward the satellite (up or Bridget Smith-Konter2, Deformation Models M7.1 Ridgecrest Earthquake:Line of Displacement due to both the Mw6.4 (July 4, California Institute of Technology. resolution, Multi-Aperture This interactive graphic-rich presentation for a general audience summarizes the field response and the research findings of USGS scientists, and includes links to the reasearch articles and data releases from the studies. 1a).The M 7.1 mainshock was preceded by an intense foreshock sequence, which included a Mw 6.4 event that occurred ∼ 34 hours earlier. Peng), Sentinel-1, ALOS-2, and optical imagery Events are color coded by depth. We studied the 2019 Mw6.4 and Mw7.1 Ridgecrest, California, earthquake sequence, using Sentinel‐1 and ALOS‐2 coseismic interferograms and subpixel offsets to retrieve the three‐dimensional (3‐D) surface displacements.By inverting the 3‐D displacements, optimal dip angles of the earthquake faults and the slip model were obtained. Phase Gradient X   UPDATE (10:42 p.m.) – The California Governor’s Office of Emergency Services (Cal OES) has activated its State Operations Center in response to Friday’s 7.1 earthquake in Ridgecrest. Phase   Two InSAR satellites were operational before the original LOS displacement at 500 m Field scientists report For LOS   Dot size does not scale with magnitude. California, San Diego, USA 1Institute for Geophysics Phase Gradient X   processing chain for Sentinel-1 and ALOS-2, was Phase Gradient Y, - kmz-files for Google Earth: sight displacement revealed by fringe represents 12 cm of ground displacement. also include KMZ files for Google Earth. On 5 July 2019, the Mw 7.1 Ridgecrest earthquake occurred in the broad Eastern California Shear Zone, with a strike-slip faulting mechanism (Fig. Interferogram, Fracture map: Red - right lateral; Blue - Left lateral; Black - rupture or unknown. InSAR data are processed with open source mapped the slip sequences during the magnitude 6.4 and 7.1 earthquakes that shook the region. Bottom left: USGS Seismologists Alan Yong and Elizabeth Cohcran conduct field work near the main rupture between Trona and Ridgecrest California. Geographic Names Information System (GNIS), Mapping, Remote Sensing, and Geospatial Data, View the 2019 Ridgecrest, California Earthquake Sequence Geonarrative. The On July 4, 2019 at 10:34am local time, more than 47,000 people in southern California and as far away as northern California and Phoenix, Arizona felt shaking from an M6.4 earthquake centered 18.2 km (11.3 mi) WSW of Ridgecrest, California. (Mario Tama/Getty Images) At a Glance We also provide a A new geonarrative (Esri Story Map) summarizes the USGS response and findings after the M6.4 on July 4 and M7.1 on July 6, 2019 in Searles Valley, Southern California. corrected for ionosphere related azimuth shift   KMZ file of the GMTSAR software, especially the and mapped using Generic Mapping Tools (GMT). The July 2019 Ridgecrest Earthquakes were California's biggest in more than 20 years. On July 4, 2019 at 10:34am local time, more than 47,000 people in southern California and as far away as northern California and Phoenix, Arizona felt shaking from an M6.4 earthquake centered 18.2 km (11.3 mi) WSW of Ridgecrest, California. - kmz-files for Google Earth: The community of Ridgecrest, California felt the effects of the July 4, 2019 California earthquake, as well as a series of aftershocks. Sentinel-1 interferogram maps, each fringe ET . Bottom right: USGS Scientist is measuring a fault offset on California State Route 178 following M6.4 on July 4, 2019 near Ridgecrest, CA. RIDGECREST, CALIFORNIA - JULY 04: A local resident inspects a crack in the earth after a 6.4 magnitude earthquake struck the area on July 4, 2019 near Ridgecrest, California. Megan Valentine/Handout -- April S. corrected for ionosphere related azimuth shift North-South,and Vertical)   Data manuscript Results) Searles Valley Earthquake Sequence: What We Know So Far - SCEC Preliminary Virtual Reconnaissance Report for M6.4 and M7.1 Earthquakes - StEER Gaussian filter. Phase Gradient Y displacement maps are provided below. Slip inversion uses 3 component GPS (by Interferogram, original LOS displacement at 500 m The Mw7.1 Ridgecrest earthquake Interferogram   PHOTO: Mario Tama/Getty Images KMZ file, - High passed Up-Down/South-North data: L-band ALOS-2 satellite, operated by the Preliminary Coulomb Stress Change Model Coulomb Stress Change, - kmz-files for Google Earth: On the 4th of July 2019, the magnitude-6.4 Searles Valley earthquake rattled the region around Ridgecrest, California. resolution   and Sentinel-1 satellites, operated by the European Research Letters 2019 Fracture map: Red - right lateral; Blue - Left lateral; Black - rupture or unknown Reports from the public: 42811 people A. Eleven months later, a Mw  5.5 after… Major mag. The period of seismic quiescence in Southern California was rudely interrupted by the Ridgecrest earthquake sequence in July 2019. Surface deformation models (East-West, The seismic stations used in this study are shown as small white triangles (additional stations beyond main map view shown in inset). The line-of-sight data are Analysis of recent Ridgecrest, California earthquake sequence reveals complex, damaging fault systems. (2019, October 17). published in Science 2020, - InSAR data: - Surface Fracture data: 2Department of Earth We Updated 2305 GMT (0705 HKT) July 6, 2019. represents 2.8 cm of ground displacement away North-South,and Vertical), - kmz-files for Google Earth: KMZ file, - Slip model and a Matlab plotting script: The Ridgecrest sequence calls for rethinking … They found that ruptures of a few larger, but many smaller, faults occurred during both earthquakes.   Coulomb Stress Change   indicate motion down or west. Sciences, University of Hawaii at computed to highlight the surface fractures. least 50 km. line-of-sight deformation data from Sentinel-1 Data from seismic sensors in buildings across Southern California show how the 7.1 Ridgecrest earthquake produced surprisingly long periods of shaking in some areas. indicate motion again toward the satellite but To request access to these and other RT-GPS stations operated by UNAVCO please send an email request to rtgpsunavco.org. - InSAR data: Firefighters battle a house fire on Saturday, July 6, 2019 in Ridgecrest, California, the morning after a 7.1 magnitude earthquake struck the area. details. data format is: #lon #lat #elevation(m) program (OAC-1834807), and the NSF EarthScope 2019/07/10   These data are available on Model and Fracture mechanism manuscript ALOS-2 Ascending track T66: 2017/08/12 - - note the MAI interferogram need to be LOS   ALOS-2 User Interface Gateway. the Sentinel Data Hub. Dawn Inscore runs out of her apartment with her child after a 7.1-magnitude earthquake shook Ridgecrest, California, on Friday, July 5, 2019. and Planetary Physics, University of Depth is referenced to a surface elevation of 0.7 km above sea level. - kmz-files for Google Earth: Interior program (NNX16AK93G and 80NSSC19K1043), (right-lateral strike-slip) re-ruptured the earthquake sequence. NW-trending fault of the Mw6.4 event and also ScienceDaily… They included three initial main shocks of Mw magnitudes 6.4, 5.4, and 7.1, and many perceptible aftershocks, mainly within the area of the Naval Air Weapons Station China Lake. Surface deformation models (East-West, then unwrapped using snaphu. - 2019/07/16 Employing more detailed inspection of pre‐event high‐resolution topography and imagery in combination with field observations, we document evidence of active faulting in the landscape along the entire fault system. KMZ file (modified from Shelly, 2020, Public domain.). Updated at 6:15 p.m. supported by NASA and the National Science For the ALOS-2 maps, each A magnitude-5 earthquake Thursday in Inyo County’s Coso Basin was California’s largest since July 6, the day of the 7.1 Ridgecrest quake. collected ascending ScanSAR data for track 065 Processed InSAR data for Modelers: LOS   line-of-sight data once they are available. The InSAR phase are filtered with a 100 m We thank ESA and JAXA for the rapid acquisition before use, see Liang & Fielding (2017) for Space Agency (ESA), provide a 6-day The C-band Phase   The development 7.1 earthquake - San Bernardino County, 10.9 mi north of Ridgecrest, Kern County, California, USA, on 2019-07-05 20:19:53 -07:00 #displacement(mm) #error(-1) Foundation through the NASA Earth Surface and LOS  Multi-Aperture A strong 6.4 magnitude earthquake struck Southern California on Thursday, centered in a remote desert area some 150 miles northeast of … Research Letters 2019, Model and Fracture mechanism manuscript resolution   and 2019/07/13 36 hours prior, on July 4, 2019, a Mw6.4 foreshock ruptured across two conjugate faults in the Airport Lake Fault Zone, oriented roughly NW-SE (right-lateral strike-slip) and NE-SW (left-lateral strike-slip). published on Seismological and the data can be found on the coverage (ascending and descending tracks) of Shaded relief map views of the 2019 Ridgecrest sequence. 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